O2. Judge / Maps, Lambda and Stream API - More Exercise

package MapsLambdaStreamAPI.MoreExercises;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Scanner;

public class O2Judge {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        Map<String , Map<String , Integer>> courseInfo = new LinkedHashMap<>();

        String input = scanner.nextLine();
        while (!input.equals("no more time")){
            String[] tokens = input.split(" -> ");
            String username = tokens[0];
            String contest = tokens[1];
            int points = Integer.parseInt(tokens[2]);
            courseInfo.putIfAbsent(contest , new LinkedHashMap<>());
            courseInfo.get(contest).putIfAbsent(username , 0);
            if (courseInfo.get(contest).get(username) < points){
                courseInfo.get(contest).put(username , points);
            }
            input = scanner.nextLine();
        }
        int[] num = new int[1];
        courseInfo
                .forEach((key, value) -> {
                    num[0] = 0;
                    System.out.printf("%s: %d participants%n", key, value.size());
                    value
                            .entrySet()
                            .stream()
                            .sorted((s1, s2) -> {
                                int result = s2.getValue().compareTo(s1.getValue());
                                if (result == 0) {
                                    result = s1.getKey().compareTo(s2.getKey());
                                }
                                return result;
                            })
                            .forEach(s -> System.out.printf("%d. %s <::> %d%n", ++num[0], s.getKey(), s.getValue()));
                });
        Map<String , Integer> studentInfo = new HashMap<>();
        for (Map.Entry<String, Map<String , Integer>> current : courseInfo.entrySet()){
            for (Map.Entry<String, Integer> student: current.getValue().entrySet()){
                studentInfo.putIfAbsent(student.getKey() , 0);
                int newPoints = studentInfo.get(student.getKey()) + student.getValue();
                studentInfo.put(student.getKey() , newPoints);
            }
        }
        System.out.println("Individual standings:");
        studentInfo
                .entrySet()
                .stream()
                .sorted((s1,s2) -> {
                    num[0] = 0;
                    int result = s2.getValue().compareTo(s1.getValue());
                    if ( result == 0){
                        result = s1.getKey().compareTo(s2.getKey());
                    }
                    return result;
                })
                .forEach(s -> System.out.printf("%d. %s -> %d%n", ++num[0] , s.getKey() , s.getValue()));

    }
}